Coarse adjustment cell array applied to digitally controlled oscillator and related apparatus

ABSTRACT

The disclosure discloses a coarse adjustment cell array applied to a digitally controlled oscillator and a related apparatus. The coarse adjustment cell array applied to the digitally controlled oscillator includes X coarse adjustment cells, and each coarse adjustment cell in the coarse adjustment cell array includes a logic cell and W fine adjustment cells; and input to a logic cell of a coarse adjustment cell i in the coarse adjustment cell array includes Y coarse adjustment control bits and W fine adjustment control bits, output from the logic cell of the coarse adjustment cell i is used to control whether W fine adjustment cells in the coarse adjustment cell i work, Y is an integer greater than 1, and X and W are integers greater than 1.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of International Application No.PCT/CN2016/087706, filed on Jun. 29, 2016, which claims priority toChinese Patent Application No. 201510375644.3, filed on Jun. 30, 2015,both of which are hereby incorporated by reference in their entireties.

TECHNICAL FIELD

The present application relates to the field of electronic technologies,and specifically, to a coarse adjustment cell array applied to adigitally controlled oscillator and a related apparatus.

BACKGROUND

A digitally controlled oscillator (DCO) is an extremely common circuitelement, and the DCO is widely used in many circuits (such as aphase-locked loop circuit).

The DCO controls a frequency of the oscillator by using discrete digitalsignals, and therefore, the frequency of the DCO is discrete. A changedstep of the frequency is a function of a digital control bit. Thisfeature of the DCO is different from frequency change continuity of aconventional analog voltage-controlled oscillator. A minimum step of theDCO directly determines quantization noise contributed by the DCO. Asmaller frequency step of the DCO leads to lower quantization noisecontributed by the DCO. However, if a frequency step is smaller, alarger quantity of capacitor cells (coarse adjustment/fine adjustmentcells) are usually required to cover a same frequency range, moredigital control bits are usually required, and more control cables arealso required to transmit the digital control bits. Therefore, thecontrol cables may be a main factor that determines a layout area, andthe control cables may be even redundant to become a circuit layoutdesign bottleneck.

A capacitor cell in a capacitor array of a conventional DCO usestemperature code for a layout, and converts binary code to temperaturecode by using a row-column decoder. Each capacitor cell selects a rowcontrol cable and a column control cable by using the row-columndecoder, to control the capacitor cell to work or not to work (notworking means disabling). Enabling and disabling of each capacitor cellis corresponding to an increase or a decrease of an oscillatorfrequency. In principle, there is a monotonically linear relationshipbetween a frequency of a digitally controlled oscillator and enablingand disabling of each capacitor cell.

The capacitor array of the conventional DCO includes a fine adjustmentcell array and a coarse adjustment cell array. The fine adjustment cellarray includes multiple fine adjustment cells (a fine adjustment cellmay also be referred to as a fine adjustment capacitor cell in somescenarios). The coarse adjustment cell array includes multiple coarseadjustment cells (a coarse adjustment cell may also be referred to as acoarse adjustment capacitor cell in some scenarios). A coarse adjustmentcell has a larger frequency step, and a fine adjustment cell has asmaller frequency step. Therefore, there is a problem of carry from thefine adjustment cell to the coarse adjustment cell. However, in thecapacitor array of the conventional DCO, there is usually a mismatch(Mismatch) problem during the carry from the fine adjustment cell to thecoarse adjustment cell. Practice shows that the mismatch directlyaffects circuit performance, and sometimes, impact of the mismatch onthe circuit performance reaches an extent that cannot be ignored.

SUMMARY

Embodiments of the present disclosure provide a coarse adjustment cellarray applied to a digitally controlled oscillator and a relatedapparatus, to avoid a mismatch problem as far as possible, so as toimprove related circuit performance.

A first aspect of the embodiments of the present disclosure provides acoarse adjustment cell array applied to a digitally controlledoscillator, where the coarse adjustment cell array includes X coarseadjustment cells, and each coarse adjustment cell in the coarseadjustment cell array includes a logic cell and W fine adjustment cells;and

input to a logic cell of a coarse adjustment cell i in the coarseadjustment cell array includes Y coarse adjustment control bits and Wfine adjustment control bits, output from the logic cell of the coarseadjustment cell i is used to control whether W fine adjustment cells inthe coarse adjustment cell i work, the coarse adjustment cell i is anycoarse adjustment cell in the coarse adjustment cell array, Y is aninteger greater than 1, X is an integer greater than 1, and W is aninteger greater than 1.

With reference to the first aspect, in a first possible implementationof the first aspect, if the Y coarse adjustment control bits are a firstvalue, the output from the logic cell of the coarse adjustment cell i isused to control all the W fine adjustment cells in the coarse adjustmentcell i to work; or if the Y coarse adjustment control bits are a secondvalue, the output from the logic cell of the coarse adjustment cell i isused to control all the W fine adjustment cells in the coarse adjustmentcell i not to work; or if the Y coarse adjustment control bits are athird value, the logic cell of the coarse adjustment cell i controls,based on a value of the W fine adjustment control bits, some of the Wfine adjustment cells in the coarse adjustment cell i to work, where thefirst value, the second value, and the third value are different fromeach other.

With reference to the first possible implementation of the first aspect,in a second possible implementation of the first aspect, there is aone-to-one correspondence between the W fine adjustment cells in thecoarse adjustment cell i and the W fine adjustment control bits input tothe logic cell of the coarse adjustment cell i; and

if the Y coarse adjustment control bits are the third value, the outputfrom the logic cell of the coarse adjustment cell i is used to control afine adjustment cell that is in the W fine adjustment cells in thecoarse adjustment cell i and that is corresponding to a fine adjustmentcontrol bit whose value is 1 to work, and control a fine adjustment cellthat is in the W fine adjustment cells in the coarse adjustment cell iand that is corresponding to a fine adjustment control bit whose valueis 0 not to work; or

if the Y coarse adjustment control bits are the third value, the outputfrom the logic cell of the coarse adjustment cell i is used to control afine adjustment cell that is in the W fine adjustment cells in thecoarse adjustment cell i and that is corresponding to a fine adjustmentcontrol bit whose value is 0 to work, and control a fine adjustment cellthat is in the W fine adjustment cells in the coarse adjustment cell iand that is corresponding to a fine adjustment control bit whose valueis 1 not to work.

With reference to the first aspect, the first possible implementation ofthe first aspect, or the second possible implementation of the firstaspect, in a third possible implementation of the first aspect, W isequal to 2^(n), and n is a positive integer.

With reference to the first aspect, the first possible implementation ofthe first aspect, the second possible implementation of the firstaspect, or the third possible implementation of the first aspect, in afourth possible implementation of the first aspect, Y is equal to 2.

A second aspect of the embodiments of the present disclosure provides adigitally controlled oscillator, including a coarse adjustment cellarray, a coarse adjustment row-column decoder, and a fine adjustmentrow-column decoder, where the coarse adjustment cell array is any coarseadjustment cell array provided in the embodiments of the presentdisclosure;

the coarse adjustment row-column decoder is configured to decode aninput first control signal, so as to output A coarse adjustment controlbits;

the fine adjustment row-column decoder is configured to decode an inputsecond control signal, so as to output B fine adjustment control bits;and

a set formed by the Y coarse adjustment control bits is a subset of aset including the A coarse adjustment control bits, and a set includingthe W fine adjustment control bits is a subset of a set including the Bfine adjustment control bits.

With reference to the second aspect, in a first possible implementationof the second aspect, the set including the W fine adjustment controlbits is equal to the set including the B fine adjustment control bits,and each coarse adjustment cell in the coarse adjustment cell arrayshares the W fine adjustment control bits.

With reference to the second aspect or the first possible implementationof the second aspect, in a second possible implementation of the secondaspect, two adjacent coarse adjustment cells in the coarse adjustmentcell array share one coarse adjustment control bit in the A coarseadjustment control bits, and any two adjacent coarse adjustment cells inthe coarse adjustment cell array share different coarse adjustmentcontrol bits in the A coarse adjustment control bits.

With reference to the second aspect, the first possible implementationof the second aspect, or the second possible implementation of thesecond aspect, in a third possible implementation of the second aspect,

the coarse adjustment row-column decoder includes A coarse adjustmentcontrol bit output cables, and the A coarse adjustment control bits arein a one-to-one correspondence with the A coarse adjustment control bitoutput cables.

With reference to the second aspect, the first possible implementationof the second aspect, the second possible implementation of the secondaspect, or the third possible implementation of the second aspect, in afourth possible implementation of the second aspect, the fine adjustmentrow-column decoder includes B fine adjustment control bit output cables,and the B fine adjustment control bits are in a one-to-onecorrespondence with the B fine adjustment control bit output cables.

With reference to the second aspect, the first possible implementationof the second aspect, the second possible implementation of the secondaspect, the third possible implementation of the second aspect, or thefourth possible implementation of the second aspect, in a fifth possibleimplementation of the second aspect,

the coarse adjustment cell array includes X coarse adjustment cells, andeach coarse adjustment cell in the coarse adjustment cell array includesa logic cell and W fine adjustment cells; and

input to a logic cell of a coarse adjustment cell i in the coarseadjustment cell array includes Y coarse adjustment control bits and Wfine adjustment control bits, output from the logic cell of the coarseadjustment cell i is used to control whether W fine adjustment cells inthe coarse adjustment cell i work, the coarse adjustment cell i is anycoarse adjustment cell in the coarse adjustment cell array, Y is aninteger greater than 1, X is an integer greater than 1, and W is aninteger greater than 1.

With reference to the fifth possible implementation of the secondaspect, in a sixth possible implementation of the second aspect, if theY coarse adjustment control bits are a first value, the output from thelogic cell of the coarse adjustment cell i is used to control all the Wfine adjustment cells in the coarse adjustment cell i to work; or if theY coarse adjustment control bits are a second value, the output from thelogic cell of the coarse adjustment cell i is used to control all the Wfine adjustment cells in the coarse adjustment cell i not to work; or ifthe Y coarse adjustment control bits are a third value, the logic cellof the coarse adjustment cell i controls, based on a value of the W fineadjustment control bits, some of the W fine adjustment cells in thecoarse adjustment cell i to work, where the first value, the secondvalue, and the third value are different from each other.

With reference to the sixth possible implementation of the secondaspect, in a seventh possible implementation of the second aspect, thereis a one-to-one correspondence between the W fine adjustment cells inthe coarse adjustment cell i and the W fine adjustment control bitsinput to the logic cell of the coarse adjustment cell i; and

if the Y coarse adjustment control bits are the third value, the outputfrom the logic cell of the coarse adjustment cell i is used to control afine adjustment cell that is in the W fine adjustment cells in thecoarse adjustment cell i and that is corresponding to a fine adjustmentcontrol bit whose value is 1 to work, and control a fine adjustment cellthat is in the W fine adjustment cells in the coarse adjustment cell iand that is corresponding to a fine adjustment control bit whose valueis 0 not to work; or

if the Y coarse adjustment control bits are the third value, the outputfrom the logic cell of the coarse adjustment cell i is used to control afine adjustment cell that is in the W fine adjustment cells in thecoarse adjustment cell i and that is corresponding to a fine adjustmentcontrol bit whose value is 0 to work, and control a fine adjustment cellthat is in the W fine adjustment cells in the coarse adjustment cell iand that is corresponding to a fine adjustment control bit whose valueis 1 not to work.

With reference to the fifth possible implementation of the secondaspect, the sixth possible implementation of the second aspect, or theseventh possible implementation of the second aspect, in an eighthpossible implementation of the second aspect, W is equal to 2^(n), and nis a positive integer.

With reference to the fifth possible implementation of the secondaspect, the sixth possible implementation of the second aspect, theseventh possible implementation of the second aspect, or the eighthpossible implementation of the second aspect, in a ninth possibleimplementation of the second aspect, Y is equal to 2.

A third aspect of the embodiments of the present disclosure provides afrequency synthesizer, including:

a digitally controlled oscillator and a digital logic cell, where thedigitally controlled oscillator is any digitally controlled oscillatorprovided in the embodiments of the present disclosure, the digital logiccell is configured to output the first control signal to the coarseadjustment row-column decoder, and the digital logic cell is furtherconfigured to output the second control signal to the fine adjustmentrow-column decoder.

With reference to the third aspect, in a first possible implementationof the third aspect, the digital logic cell is configured to output thefirst control signal to the coarse adjustment row-column decoderaccording to a frequency dividing control word and a reference frequencythat are input to the digital logic cell, and the digital logic cell isfurther configured to output the second control signal to the fineadjustment row-column decoder according to the frequency dividingcontrol word and the reference frequency that are input to the digitallogic cell.

With reference to the third aspect or the first possible implementationof the third aspect, in a second possible implementation of the thirdaspect, the digitally controlled oscillator includes a coarse adjustmentcell array, a coarse adjustment row-column decoder, and a fineadjustment row-column decoder, where the coarse adjustment cell array isany coarse adjustment cell array provided in the embodiments of thepresent disclosure;

the coarse adjustment row-column decoder is configured to decode aninput first control signal, so as to output A coarse adjustment controlbits;

the fine adjustment row-column decoder is configured to decode an inputsecond control signal, so as to output B fine adjustment control bits;and

a set formed by the Y coarse adjustment control bits is a subset of aset including the A coarse adjustment control bits, and a set includingthe W fine adjustment control bits is a subset of a set including the Bfine adjustment control bits.

With reference to the second possible implementation of the thirdaspect, in a third possible implementation of the third aspect, the setincluding the W fine adjustment control bits is equal to the setincluding the B fine adjustment control bits, and each coarse adjustmentcell in the coarse adjustment cell array shares the W fine adjustmentcontrol bits.

With reference to the second possible implementation of the third aspector the third possible implementation of the third aspect, in a fourthpossible implementation of the third aspect, two adjacent coarseadjustment cells in the coarse adjustment cell array share one coarseadjustment control bit in the A coarse adjustment control bits, and anytwo adjacent coarse adjustment cells in the coarse adjustment cell arrayshare different coarse adjustment control bits in the A coarseadjustment control bits.

With reference to the second possible implementation of the thirdaspect, the third possible implementation of the third aspect, or thefourth possible implementation of the third aspect, in a fifth possibleimplementation of the third aspect, the coarse adjustment row-columndecoder includes A coarse adjustment control bit output cables, and theA coarse adjustment control bits are in a one-to-one correspondence withthe A coarse adjustment control bit output cables.

With reference to the second possible implementation of the thirdaspect, the third possible implementation of the third aspect, thefourth possible implementation of the third aspect, or the fifthpossible implementation of the third aspect, in a sixth possibleimplementation of the third aspect, the fine adjustment row-columndecoder includes B fine adjustment control bit output cables, and the Bfine adjustment control bits are in a one-to-one correspondence with theB fine adjustment control bit output cables.

With reference to the second possible implementation of the thirdaspect, the third possible implementation of the third aspect, thefourth possible implementation of the third aspect, the fifth possibleimplementation of the third aspect, or the sixth possible implementationof the third aspect, in a seventh possible implementation of the thirdaspect, the coarse adjustment cell array includes X coarse adjustmentcells, and each coarse adjustment cell in the coarse adjustment cellarray includes a logic cell and W fine adjustment cells; and

input to a logic cell of a coarse adjustment cell i in the coarseadjustment cell array includes Y coarse adjustment control bits and Wfine adjustment control bits, output from the logic cell of the coarseadjustment cell i is used to control whether W fine adjustment cells inthe coarse adjustment cell i work, the coarse adjustment cell i is anycoarse adjustment cell in the coarse adjustment cell array, Y is aninteger greater than 1, X is an integer greater than 1, and W is aninteger greater than 1.

With reference to the seventh possible implementation of the thirdaspect, in an eighth possible implementation of the third aspect, if theY coarse adjustment control bits are a first value, the output from thelogic cell of the coarse adjustment cell i is used to control all the Wfine adjustment cells in the coarse adjustment cell i to work; or if theY coarse adjustment control bits are a second value, the output from thelogic cell of the coarse adjustment cell i is used to control all the Wfine adjustment cells in the coarse adjustment cell i not to work; or ifthe Y coarse adjustment control bits are a third value, the logic cellof the coarse adjustment cell i controls, based on a value of the W fineadjustment control bits, some of the W fine adjustment cells in thecoarse adjustment cell i to work, where the first value, the secondvalue, and the third value are different from each other.

With reference to the eighth possible implementation of the thirdaspect, in a ninth possible implementation of the third aspect, there isa one-to-one correspondence between the W fine adjustment cells in thecoarse adjustment cell i and the W fine adjustment control bits input tothe logic cell of the coarse adjustment cell i; and

if the Y coarse adjustment control bits are the third value, the outputfrom the logic cell of the coarse adjustment cell i is used to control afine adjustment cell that is in the W fine adjustment cells in thecoarse adjustment cell i and that is corresponding to a fine adjustmentcontrol bit whose value is 1 to work, and control a fine adjustment cellthat is in the W fine adjustment cells in the coarse adjustment cell iand that is corresponding to a fine adjustment control bit whose valueis 0 not to work; or

if the Y coarse adjustment control bits are the third value, the outputfrom the logic cell of the coarse adjustment cell i is used to control afine adjustment cell that is in the W fine adjustment cells in thecoarse adjustment cell i and that is corresponding to a fine adjustmentcontrol bit whose value is 0 to work, and control a fine adjustment cellthat is in the W fine adjustment cells in the coarse adjustment cell iand that is corresponding to a fine adjustment control bit whose valueis 1 not to work.

With reference to the seventh possible implementation of the thirdaspect, the eighth possible implementation of the third aspect, or theninth possible implementation of the third aspect, in a tenth possibleimplementation of the third aspect, W is equal to 2^(n), and n is apositive integer.

With reference to the seventh possible implementation of the thirdaspect, the eighth possible implementation of the third aspect, theninth possible implementation of the third aspect, or the tenth possibleimplementation of the third aspect, in an eleventh possibleimplementation of the third aspect, Y is equal to 2.

A fourth aspect of the embodiments of the present disclosure provides acircuit, including a coarse adjustment cell array, where

the coarse adjustment cell array includes X coarse adjustment cells, andeach coarse adjustment cell in the coarse adjustment cell array includesa logic cell and W fine adjustment cells; and

input to a logic cell of a coarse adjustment cell i in the coarseadjustment cell array includes Y coarse adjustment control bits and Wfine adjustment control bits, output from the logic cell of the coarseadjustment cell i is used to control whether W fine adjustment cells inthe coarse adjustment cell i work, the coarse adjustment cell i is anycoarse adjustment cell in the coarse adjustment cell array, Y is aninteger greater than 1, X is an integer greater than 1, and W is aninteger greater than 1.

With reference to the fourth aspect, in a first possible implementationof the fourth aspect, if the Y coarse adjustment control bits are afirst value, the output from the logic cell of the coarse adjustmentcell i is used to control all the W fine adjustment cells in the coarseadjustment cell i to work; or if the Y coarse adjustment control bitsare a second value, the output from the logic cell of the coarseadjustment cell i is used to control all the W fine adjustment cells inthe coarse adjustment cell i not to work; or if the Y coarse adjustmentcontrol bits are a third value, the logic cell of the coarse adjustmentcell i controls, based on a value of the W fine adjustment control bits,some of the W fine adjustment cells in the coarse adjustment cell i towork, where the first value, the second value, and the third value aredifferent from each other.

With reference to the first possible implementation of the fourthaspect, in a second possible implementation of the fourth aspect, thereis a one-to-one correspondence between the W fine adjustment cells inthe coarse adjustment cell i and the W fine adjustment control bitsinput to the logic cell of the coarse adjustment cell i; and

if the Y coarse adjustment control bits are the third value, the outputfrom the logic cell of the coarse adjustment cell i is used to control afine adjustment cell that is in the W fine adjustment cells in thecoarse adjustment cell i and that is corresponding to a fine adjustmentcontrol bit whose value is 1 to work, and control a fine adjustment cellthat is in the W fine adjustment cells in the coarse adjustment cell iand that is corresponding to a fine adjustment control bit whose valueis 0 not to work; or

if the Y coarse adjustment control bits are the third value, the outputfrom the logic cell of the coarse adjustment cell i is used to control afine adjustment cell that is in the W fine adjustment cells in thecoarse adjustment cell i and that is corresponding to a fine adjustmentcontrol bit whose value is 0 to work, and control a fine adjustment cellthat is in the W fine adjustment cells in the coarse adjustment cell iand that is corresponding to a fine adjustment control bit whose valueis 1 not to work.

With reference to the fourth aspect, the first possible implementationof the fourth aspect, or the second possible implementation of thefourth aspect, in a third possible implementation of the fourth aspect,W is equal to 2^(n), and n is a positive integer.

With reference to the fourth aspect, the first possible implementationof the fourth aspect, the second possible implementation of the fourthaspect, or the third possible implementation of the fourth aspect, in afourth possible implementation of the fourth aspect, Y is equal to 2.

A fifth aspect of the embodiments of the present disclosure provides acircuit, including a digitally controlled oscillator, where

the digitally controlled oscillator includes a coarse adjustment cellarray, a coarse adjustment row-column decoder, and a fine adjustmentrow-column decoder, where the coarse adjustment cell array is any coarseadjustment cell array provided in the embodiments of the presentdisclosure;

the coarse adjustment row-column decoder is configured to decode aninput first control signal, so as to output A coarse adjustment controlbits;

the fine adjustment row-column decoder is configured to decode an inputsecond control signal, so as to output B fine adjustment control bits;and

a set formed by the Y coarse adjustment control bits is a subset of aset including the A coarse adjustment control bits, and a set includingthe W fine adjustment control bits is a subset of a set including the Bfine adjustment control bits.

With reference to the fifth aspect, in a first possible implementationof the fifth aspect, the set including the W fine adjustment controlbits is equal to the set including the B fine adjustment control bits,and each coarse adjustment cell in the coarse adjustment cell arrayshares the W fine adjustment control bits.

With reference to the fifth aspect or the first possible implementationof the fifth aspect, in a second possible implementation of the fifthaspect, two adjacent coarse adjustment cells in the coarse adjustmentcell array share one coarse adjustment control bit in the A coarseadjustment control bits, and any two adjacent coarse adjustment cells inthe coarse adjustment cell array share different coarse adjustmentcontrol bits in the A coarse adjustment control bits.

With reference to the fifth aspect, the first possible implementation ofthe fifth aspect, or the second possible implementation of the fifthaspect, in a third possible implementation of the fifth aspect,

the coarse adjustment row-column decoder includes A coarse adjustmentcontrol bit output cables, and the A coarse adjustment control bits arein a one-to-one correspondence with the A coarse adjustment control bitoutput cables.

With reference to the fifth aspect, the first possible implementation ofthe fifth aspect, the second possible implementation of the fifthaspect, or the third possible implementation of the fifth aspect, in afourth possible implementation of the fifth aspect, the fine adjustmentrow-column decoder includes B fine adjustment control bit output cables,and the B fine adjustment control bits are in a one-to-onecorrespondence with the B fine adjustment control bit output cables.

With reference to the fifth aspect, the first possible implementation ofthe fifth aspect, the second possible implementation of the fifthaspect, the third possible implementation of the fifth aspect, or thefourth possible implementation of the fifth aspect, in a fifth possibleimplementation of the fifth aspect,

the coarse adjustment cell array includes X coarse adjustment cells, andeach coarse adjustment cell in the coarse adjustment cell array includesa logic cell and W fine adjustment cells; and

input to a logic cell of a coarse adjustment cell i in the coarseadjustment cell array includes Y coarse adjustment control bits and Wfine adjustment control bits, output from the logic cell of the coarseadjustment cell i is used to control whether W fine adjustment cells inthe coarse adjustment cell i work, the coarse adjustment cell i is anycoarse adjustment cell in the coarse adjustment cell array, Y is aninteger greater than 1, X is an integer greater than 1, and W is aninteger greater than 1.

With reference to the fifth possible implementation of the fifth aspect,in a sixth possible implementation of the fifth aspect, if the Y coarseadjustment control bits are a first value, the output from the logiccell of the coarse adjustment cell i is used to control all the W fineadjustment cells in the coarse adjustment cell i to work; or if the Ycoarse adjustment control bits are a second value, the output from thelogic cell of the coarse adjustment cell i is used to control all the Wfine adjustment cells in the coarse adjustment cell i not to work; or ifthe Y coarse adjustment control bits are a third value, the logic cellof the coarse adjustment cell i controls, based on a value of the W fineadjustment control bits, some of the W fine adjustment cells in thecoarse adjustment cell i to work, where the first value, the secondvalue, and the third value are different from each other.

With reference to the sixth possible implementation of the fifth aspect,in a seventh possible implementation of the fifth aspect, there is aone-to-one correspondence between the W fine adjustment cells in thecoarse adjustment cell i and the W fine adjustment control bits input tothe logic cell of the coarse adjustment cell i; and

if the Y coarse adjustment control bits are the third value, the outputfrom the logic cell of the coarse adjustment cell i is used to control afine adjustment cell that is in the W fine adjustment cells in thecoarse adjustment cell i and that is corresponding to a fine adjustmentcontrol bit whose value is 1 to work, and control a fine adjustment cellthat is in the W fine adjustment cells in the coarse adjustment cell iand that is corresponding to a fine adjustment control bit whose valueis 0 not to work; or

if the Y coarse adjustment control bits are the third value, the outputfrom the logic cell of the coarse adjustment cell i is used to control afine adjustment cell that is in the W fine adjustment cells in thecoarse adjustment cell i and that is corresponding to a fine adjustmentcontrol bit whose value is 0 to work, and control a fine adjustment cellthat is in the W fine adjustment cells in the coarse adjustment cell iand that is corresponding to a fine adjustment control bit whose valueis 1 not to work.

With reference to the fifth possible implementation of the fifth aspect,the sixth possible implementation of the fifth aspect, or the seventhpossible implementation of the fifth aspect, in an eighth possibleimplementation of the fifth aspect, W is equal to 2^(n), and n is apositive integer.

With reference to the fifth possible implementation of the fifth aspect,the sixth possible implementation of the fifth aspect, the seventhpossible implementation of the fifth aspect, or the eighth possibleimplementation of the fifth aspect, in a ninth possible implementationof the fifth aspect, Y is equal to 2.

A fifth aspect of the embodiments of the present disclosure provides acircuit, including a frequency synthesizer, where

the frequency synthesizer includes:

a digitally controlled oscillator and a digital logic cell, where thedigitally controlled oscillator is any digitally controlled oscillatorprovided in the embodiments of the present disclosure, the digital logiccell is configured to output the first control signal to the coarseadjustment row-column decoder, and the digital logic cell is furtherconfigured to output the second control signal to the fine adjustmentrow-column decoder.

With reference to the sixth aspect, in a first possible implementationof the sixth aspect, the digital logic cell is configured to output thefirst control signal to the coarse adjustment row-column decoderaccording to a frequency dividing control word and a reference frequencythat are input to the digital logic cell, and the digital logic cell isfurther configured to output the second control signal to the fineadjustment row-column decoder according to the frequency dividingcontrol word and the reference frequency that are input to the digitallogic cell.

With reference to the sixth aspect or the first possible implementationof the sixth aspect, in a second possible implementation of the sixthaspect, the digitally controlled oscillator includes a coarse adjustmentcell array, a coarse adjustment row-column decoder, and a fineadjustment row-column decoder, where the coarse adjustment cell array isany coarse adjustment cell array provided in the embodiments of thepresent disclosure;

the coarse adjustment row-column decoder is configured to decode aninput first control signal, so as to output A coarse adjustment controlbits;

the fine adjustment row-column decoder is configured to decode an inputsecond control signal, so as to output B fine adjustment control bits;and

a set formed by the Y coarse adjustment control bits is a subset of aset including the A coarse adjustment control bits, and a set includingthe W fine adjustment control bits is a subset of a set including the Bfine adjustment control bits.

With reference to the second possible implementation of the sixthaspect, in a third possible implementation of the sixth aspect, the setincluding the W fine adjustment control bits is equal to the setincluding the B fine adjustment control bits, and each coarse adjustmentcell in the coarse adjustment cell array shares the W fine adjustmentcontrol bits.

With reference to the second possible implementation of the sixth aspector the third possible implementation of the sixth aspect, in a fourthpossible implementation of the sixth aspect, two adjacent coarseadjustment cells in the coarse adjustment cell array share one coarseadjustment control bit in the A coarse adjustment control bits, and anytwo adjacent coarse adjustment cells in the coarse adjustment cell arrayshare different coarse adjustment control bits in the A coarseadjustment control bits.

With reference to the second possible implementation of the sixthaspect, the third possible implementation of the sixth aspect, or thefourth possible implementation of the sixth aspect, in a fifth possibleimplementation of the sixth aspect, the coarse adjustment row-columndecoder includes A coarse adjustment control bit output cables, and theA coarse adjustment control bits are in a one-to-one correspondence withthe A coarse adjustment control bit output cables.

With reference to the second possible implementation of the sixthaspect, the third possible implementation of the sixth aspect, thefourth possible implementation of the sixth aspect, or the fifthpossible implementation of the sixth aspect, in a sixth possibleimplementation of the sixth aspect, the fine adjustment row-columndecoder includes B fine adjustment control bit output cables, and the Bfine adjustment control bits are in a one-to-one correspondence with theB fine adjustment control bit output cables.

With reference to the second possible implementation of the sixthaspect, the third possible implementation of the sixth aspect, thefourth possible implementation of the sixth aspect, the fifth possibleimplementation of the sixth aspect, or the sixth possible implementationof the sixth aspect, in a seventh possible implementation of the sixthaspect, the coarse adjustment cell array includes X coarse adjustmentcells, and each coarse adjustment cell in the coarse adjustment cellarray includes a logic cell and W fine adjustment cells; and

input to a logic cell of a coarse adjustment cell i in the coarseadjustment cell array includes Y coarse adjustment control bits and Wfine adjustment control bits, output from the logic cell of the coarseadjustment cell i is used to control whether W fine adjustment cells inthe coarse adjustment cell i work, the coarse adjustment cell i is anycoarse adjustment cell in the coarse adjustment cell array, Y is aninteger greater than 1, X is an integer greater than 1, and W is aninteger greater than 1.

With reference to the seventh possible implementation of the sixthaspect, in an eighth possible implementation of the sixth aspect, if theY coarse adjustment control bits are a first value, the output from thelogic cell of the coarse adjustment cell i is used to control all the Wfine adjustment cells in the coarse adjustment cell i to work; or if theY coarse adjustment control bits are a second value, the output from thelogic cell of the coarse adjustment cell i is used to control all the Wfine adjustment cells in the coarse adjustment cell i not to work; or ifthe Y coarse adjustment control bits are a third value, the logic cellof the coarse adjustment cell i controls, based on a value of the W fineadjustment control bits, some of the W fine adjustment cells in thecoarse adjustment cell i to work, where the first value, the secondvalue, and the third value are different from each other.

With reference to the eighth possible implementation of the sixthaspect, in a ninth possible implementation of the sixth aspect, there isa one-to-one correspondence between the W fine adjustment cells in thecoarse adjustment cell i and the W fine adjustment control bits input tothe logic cell of the coarse adjustment cell i; and

if the Y coarse adjustment control bits are the third value, the outputfrom the logic cell of the coarse adjustment cell i is used to control afine adjustment cell that is in the W fine adjustment cells in thecoarse adjustment cell i and that is corresponding to a fine adjustmentcontrol bit whose value is 1 to work, and control a fine adjustment cellthat is in the W fine adjustment cells in the coarse adjustment cell iand that is corresponding to a fine adjustment control bit whose valueis 0 not to work; or

if the Y coarse adjustment control bits are the third value, the outputfrom the logic cell of the coarse adjustment cell i is used to control afine adjustment cell that is in the W fine adjustment cells in thecoarse adjustment cell i and that is corresponding to a fine adjustmentcontrol bit whose value is 0 to work, and control a fine adjustment cellthat is in the W fine adjustment cells in the coarse adjustment cell iand that is corresponding to a fine adjustment control bit whose valueis 1 not to work.

With reference to the seventh possible implementation of the sixthaspect, the eighth possible implementation of the sixth aspect, or theninth possible implementation of the sixth aspect, in a tenth possibleimplementation of the sixth aspect, W is equal to 2^(n), and n is apositive integer.

With reference to the seventh possible implementation of the sixthaspect, the eighth possible implementation of the sixth aspect, theninth possible implementation of the sixth aspect, or the tenth possibleimplementation of the sixth aspect, in an eleventh possibleimplementation of the sixth aspect, Y is equal to 2.

A seventh aspect of the embodiments of the present disclosure providesan electronic device, including a coarse adjustment cell array, where

the coarse adjustment cell array includes X coarse adjustment cells, andeach coarse adjustment cell in the coarse adjustment cell array includesa logic cell and W fine adjustment cells; and

input to a logic cell of a coarse adjustment cell i in the coarseadjustment cell array includes Y coarse adjustment control bits and Wfine adjustment control bits, output from the logic cell of the coarseadjustment cell i is used to control whether W fine adjustment cells inthe coarse adjustment cell i work, the coarse adjustment cell i is anycoarse adjustment cell in the coarse adjustment cell array, Y is aninteger greater than 1, X is an integer greater than 1, and W is aninteger greater than 1.

With reference to the seventh aspect, in a first possible implementationof the seventh aspect, if the Y coarse adjustment control bits are afirst value, the output from the logic cell of the coarse adjustmentcell i is used to control all the W fine adjustment cells in the coarseadjustment cell i to work; or if the Y coarse adjustment control bitsare a second value, the output from the logic cell of the coarseadjustment cell i is used to control all the W fine adjustment cells inthe coarse adjustment cell i not to work; or if the Y coarse adjustmentcontrol bits are a third value, the logic cell of the coarse adjustmentcell i controls, based on a value of the W fine adjustment control bits,some of the W fine adjustment cells in the coarse adjustment cell i towork, where the first value, the second value, and the third value aredifferent from each other.

With reference to the first possible implementation of the seventhaspect, in a second possible implementation of the seventh aspect, thereis a one-to-one correspondence between the W fine adjustment cells inthe coarse adjustment cell i and the W fine adjustment control bitsinput to the logic cell of the coarse adjustment cell i; and

if the Y coarse adjustment control bits are the third value, the outputfrom the logic cell of the coarse adjustment cell i is used to control afine adjustment cell that is in the W fine adjustment cells in thecoarse adjustment cell i and that is corresponding to a fine adjustmentcontrol bit whose value is 1 to work, and control a fine adjustment cellthat is in the W fine adjustment cells in the coarse adjustment cell iand that is corresponding to a fine adjustment control bit whose valueis 0 not to work; or

if the Y coarse adjustment control bits are the third value, the outputfrom the logic cell of the coarse adjustment cell i is used to control afine adjustment cell that is in the W fine adjustment cells in thecoarse adjustment cell i and that is corresponding to a fine adjustmentcontrol bit whose value is 0 to work, and control a fine adjustment cellthat is in the W fine adjustment cells in the coarse adjustment cell iand that is corresponding to a fine adjustment control bit whose valueis 1 not to work.

With reference to the seventh aspect, the first possible implementationof the seventh aspect, or the second possible implementation of theseventh aspect, in a third possible implementation of the seventhaspect, W is equal to 2^(n), and n is a positive integer.

With reference to the seventh aspect, the first possible implementationof the seventh aspect, the second possible implementation of the seventhaspect, or the third possible implementation of the seventh aspect, in afourth possible implementation of the seventh aspect, Y is equal to 2.

An eighth aspect of the embodiments of the present disclosure providesan electronic device, including a digitally controlled oscillator, where

the digitally controlled oscillator includes a coarse adjustment cellarray, a coarse adjustment row-column decoder, and a fine adjustmentrow-column decoder, where the coarse adjustment cell array is any coarseadjustment cell array provided in the embodiments of the presentdisclosure;

the coarse adjustment row-column decoder is configured to decode aninput first control signal, so as to output A coarse adjustment controlbits;

the fine adjustment row-column decoder is configured to decode an inputsecond control signal, so as to output B fine adjustment control bits;and

a set formed by the Y coarse adjustment control bits is a subset of aset including the A coarse adjustment control bits, and a set includingthe W fine adjustment control bits is a subset of a set including the Bfine adjustment control bits.

With reference to the eighth aspect, in a first possible implementationof the eighth aspect, the set including the W fine adjustment controlbits is equal to the set including the B fine adjustment control bits,and each coarse adjustment cell in the coarse adjustment cell arrayshares the W fine adjustment control bits.

With reference to the eighth aspect or the first possible implementationof the eighth aspect, in a second possible implementation of the eighthaspect, two adjacent coarse adjustment cells in the coarse adjustmentcell array share one coarse adjustment control bit in the A coarseadjustment control bits, and any two adjacent coarse adjustment cells inthe coarse adjustment cell array share different coarse adjustmentcontrol bits in the A coarse adjustment control bits.

With reference to the eighth aspect, the first possible implementationof the eighth aspect, or the eighth possible implementation of theeighth aspect, in a third possible implementation of the eighth aspect,

the coarse adjustment row-column decoder includes A coarse adjustmentcontrol bit output cables, and the A coarse adjustment control bits arein a one-to-one correspondence with the A coarse adjustment control bitoutput cables.

With reference to the eighth aspect, the first possible implementationof the eighth aspect, the second possible implementation of the eighthaspect, or the third possible implementation of the eighth aspect, in afourth possible implementation of the eighth aspect, the fine adjustmentrow-column decoder includes B fine adjustment control bit output cables,and the B fine adjustment control bits are in a one-to-onecorrespondence with the B fine adjustment control bit output cables.

With reference to the eighth aspect, the first possible implementationof the eighth aspect, the second possible implementation of the eighthaspect, the third possible implementation of the eighth aspect, or thefourth possible implementation of the eighth aspect, in a fifth possibleimplementation of the eighth aspect,

the coarse adjustment cell array includes X coarse adjustment cells, andeach coarse adjustment cell in the coarse adjustment cell array includesa logic cell and W fine adjustment cells; and

input to a logic cell of a coarse adjustment cell i in the coarseadjustment cell array includes Y coarse adjustment control bits and Wfine adjustment control bits, output from the logic cell of the coarseadjustment cell i is used to control whether W fine adjustment cells inthe coarse adjustment cell i work, the coarse adjustment cell i is anycoarse adjustment cell in the coarse adjustment cell array, Y is aninteger greater than 1, X is an integer greater than 1, and W is aninteger greater than 1.

With reference to the fifth possible implementation of the eighthaspect, in a sixth possible implementation of the eighth aspect, if theY coarse adjustment control bits are a first value, the output from thelogic cell of the coarse adjustment cell i is used to control all the Wfine adjustment cells in the coarse adjustment cell i to work; or if theY coarse adjustment control bits are a second value, the output from thelogic cell of the coarse adjustment cell i is used to control all the Wfine adjustment cells in the coarse adjustment cell i not to work; or ifthe Y coarse adjustment control bits are a third value, the logic cellof the coarse adjustment cell i controls, based on a value of the W fineadjustment control bits, some of the W fine adjustment cells in thecoarse adjustment cell i to work, where the first value, the secondvalue, and the third value are different from each other.

With reference to the sixth possible implementation of the eighthaspect, in a seventh possible implementation of the eighth aspect, thereis a one-to-one correspondence between the W fine adjustment cells inthe coarse adjustment cell i and the W fine adjustment control bitsinput to the logic cell of the coarse adjustment cell i; and

if the Y coarse adjustment control bits are the third value, the outputfrom the logic cell of the coarse adjustment cell i is used to control afine adjustment cell that is in the W fine adjustment cells in thecoarse adjustment cell i and that is corresponding to a fine adjustmentcontrol bit whose value is 1 to work, and control a fine adjustment cellthat is in the W fine adjustment cells in the coarse adjustment cell iand that is corresponding to a fine adjustment control bit whose valueis 0 not to work; or

if the Y coarse adjustment control bits are the third value, the outputfrom the logic cell of the coarse adjustment cell i is used to control afine adjustment cell that is in the W fine adjustment cells in thecoarse adjustment cell i and that is corresponding to a fine adjustmentcontrol bit whose value is 0 to work, and control a fine adjustment cellthat is in the W fine adjustment cells in the coarse adjustment cell iand that is corresponding to a fine adjustment control bit whose valueis 1 not to work.

With reference to the fifth possible implementation of the eighthaspect, the sixth possible implementation of the eighth aspect, or theseventh possible implementation of the eighth aspect, in an eighthpossible implementation of the eighth aspect, W is equal to 2^(n), and nis a positive integer.

With reference to the fifth possible implementation of the eighthaspect, the sixth possible implementation of the eighth aspect, theseventh possible implementation of the eighth aspect, or the eighthpossible implementation of the eighth aspect, in a ninth possibleimplementation of the eighth aspect, Y is equal to 2.

A ninth aspect of the embodiments of the present disclosure provides anelectronic device, including a frequency synthesizer, where

the frequency synthesizer includes:

a digitally controlled oscillator and a digital logic cell, where thedigitally controlled oscillator is any digitally controlled oscillatorprovided in the embodiments of the present disclosure, the digital logiccell is configured to output the first control signal to the coarseadjustment row-column decoder, and the digital logic cell is furtherconfigured to output the second control signal to the fine adjustmentrow-column decoder.

With reference to the ninth aspect, in a first possible implementationof the ninth aspect, the digital logic cell is configured to output thefirst control signal to the coarse adjustment row-column decoderaccording to a frequency dividing control word and a reference frequencythat are input to the digital logic cell, and the digital logic cell isfurther configured to output the second control signal to the fineadjustment row-column decoder according to the frequency dividingcontrol word and the reference frequency that are input to the digitallogic cell.

With reference to the ninth aspect or the first possible implementationof the ninth aspect, in a second possible implementation of the ninthaspect, the digitally controlled oscillator includes a coarse adjustmentcell array, a coarse adjustment row-column decoder, and a fineadjustment row-column decoder, where the coarse adjustment cell array isany coarse adjustment cell array provided in the embodiments of thepresent disclosure;

the coarse adjustment row-column decoder is configured to decode aninput first control signal, so as to output A coarse adjustment controlbits;

the fine adjustment row-column decoder is configured to decode an inputsecond control signal, so as to output B fine adjustment control bits;and

a set formed by the Y coarse adjustment control bits is a subset of aset including the A coarse adjustment control bits, and a set includingthe W fine adjustment control bits is a subset of a set including the Bfine adjustment control bits.

With reference to the second possible implementation of the ninthaspect, in a third possible implementation of the ninth aspect, the setincluding the W fine adjustment control bits is equal to the setincluding the B fine adjustment control bits, and each coarse adjustmentcell in the coarse adjustment cell array shares the W fine adjustmentcontrol bits.

With reference to the second possible implementation of the ninth aspector the third possible implementation of the ninth aspect, in a fourthpossible implementation of the ninth aspect, two adjacent coarseadjustment cells in the coarse adjustment cell array share one coarseadjustment control bit in the A coarse adjustment control bits, and anytwo adjacent coarse adjustment cells in the coarse adjustment cell arrayshare different coarse adjustment control bits in the A coarseadjustment control bits.

With reference to the second possible implementation of the ninthaspect, the third possible implementation of the ninth aspect, or thefourth possible implementation of the ninth aspect, in a fifth possibleimplementation of the ninth aspect, the coarse adjustment row-columndecoder includes A coarse adjustment control bit output cables, and theA coarse adjustment control bits are in a one-to-one correspondence withthe A coarse adjustment control bit output cables.

With reference to the second possible implementation of the ninthaspect, the third possible implementation of the ninth aspect, thefourth possible implementation of the ninth aspect, or the fifthpossible implementation of the ninth aspect, in a sixth possibleimplementation of the ninth aspect, the fine adjustment row-columndecoder includes B fine adjustment control bit output cables, and the Bfine adjustment control bits are in a one-to-one correspondence with theB fine adjustment control bit output cables.

With reference to the second possible implementation of the ninthaspect, the third possible implementation of the ninth aspect, thefourth possible implementation of the ninth aspect, the fifth possibleimplementation of the ninth aspect, or the sixth possible implementationof the ninth aspect, in a seventh possible implementation of the ninthaspect, the coarse adjustment cell array includes X coarse adjustmentcells, and each coarse adjustment cell in the coarse adjustment cellarray includes a logic cell and W fine adjustment cells; and

input to a logic cell of a coarse adjustment cell i in the coarseadjustment cell array includes Y coarse adjustment control bits and Wfine adjustment control bits, output from the logic cell of the coarseadjustment cell i is used to control whether W fine adjustment cells inthe coarse adjustment cell i work, the coarse adjustment cell i is anycoarse adjustment cell in the coarse adjustment cell array, Y is aninteger greater than 1, X is an integer greater than 1, and W is aninteger greater than 1.

With reference to the seventh possible implementation of the ninthaspect, in an eighth possible implementation of the ninth aspect, if theY coarse adjustment control bits are a first value, the output from thelogic cell of the coarse adjustment cell i is used to control all the Wfine adjustment cells in the coarse adjustment cell i to work; or if theY coarse adjustment control bits are a second value, the output from thelogic cell of the coarse adjustment cell i is used to control all the Wfine adjustment cells in the coarse adjustment cell i not to work; or ifthe Y coarse adjustment control bits are a third value, the logic cellof the coarse adjustment cell i controls, based on a value of the W fineadjustment control bits, some of the W fine adjustment cells in thecoarse adjustment cell i to work, where the first value, the secondvalue, and the third value are different from each other.

With reference to the eighth possible implementation of the ninthaspect, in a ninth possible implementation of the ninth aspect, there isa one-to-one correspondence between the W fine adjustment cells in thecoarse adjustment cell i and the W fine adjustment control bits input tothe logic cell of the coarse adjustment cell i; and

if the Y coarse adjustment control bits are the third value, the outputfrom the logic cell of the coarse adjustment cell i is used to control afine adjustment cell that is in the W fine adjustment cells in thecoarse adjustment cell i and that is corresponding to a fine adjustmentcontrol bit whose value is 1 to work, and control a fine adjustment cellthat is in the W fine adjustment cells in the coarse adjustment cell iand that is corresponding to a fine adjustment control bit whose valueis 0 not to work; or

if the Y coarse adjustment control bits are the third value, the outputfrom the logic cell of the coarse adjustment cell i is used to control afine adjustment cell that is in the W fine adjustment cells in thecoarse adjustment cell i and that is corresponding to a fine adjustmentcontrol bit whose value is 0 to work, and control a fine adjustment cellthat is in the W fine adjustment cells in the coarse adjustment cell iand that is corresponding to a fine adjustment control bit whose valueis 1 not to work.

With reference to the seventh possible implementation of the ninthaspect, the eighth possible implementation of the ninth aspect, or theninth possible implementation of the ninth aspect, in a tenth possibleimplementation of the ninth aspect, W is equal to 2^(n), and n is apositive integer.

With reference to the seventh possible implementation of the ninthaspect, the eighth possible implementation of the ninth aspect, theninth possible implementation of the ninth aspect, or the tenth possibleimplementation of the ninth aspect, in an eleventh possibleimplementation of the ninth aspect, Y is equal to 2.

It can be learned that a coarse adjustment cell array of a digitallycontrolled oscillator provided in the embodiments of the presentdisclosure includes X coarse adjustment cells. Each coarse adjustmentcell in the coarse adjustment cell array includes a logic cell and Wfine adjustment cells, that is, a fine adjustment cell is nested in acoarse adjustment cell, so that a frequency step of a coarse adjustmentcell is directly determined by using frequency steps of all fineadjustment cells in the coarse adjustment cell, and the frequency stepof the coarse adjustment cell can be better matched to the frequencysteps of the fine adjustment cells. This helps avoid a mismatch problemin the conventional art that occurs during carry from a fine adjustmentcell to a coarse adjustment cell. In addition, a logic cell isintroduced to each coarse adjustment cell, to control a working status(the working status may be working or not working) of each fineadjustment cell in the coarse adjustment cell, so that each coarseadjustment cell can be flexibly and independently controlled to work.This helps alleviate mismatch pressure in a circuit and layout designprocess. The introduction of the logic cell also helps reduce a quantityof control cables, and helps reduce complexity of a cabling layout of arelated circuit, reduce complexity and an area of the circuit, andsimplify a structure of the circuit.

BRIEF DESCRIPTION OF DRAWINGS

To describe the technical solutions in the embodiments of the presentdisclosure more clearly, the following briefly describes theaccompanying drawings required for describing the embodiments.Apparently, the accompanying drawings in the following description showmerely some embodiments of the present disclosure, and persons ofordinary skill in the art may still derive other drawings from theseaccompanying drawings without creative efforts.

FIG. 1 is a schematic architecture diagram of a digitally controlledoscillator according to an embodiment of the present disclosure;

FIG. 2 is a schematic architecture diagram of another digitallycontrolled oscillator according to an embodiment of the presentdisclosure;

FIG. 3 is a schematic architecture diagram of internal cabling of acoarse adjustment cell array according to an embodiment of the presentdisclosure;

FIG. 4 is a schematic architecture diagram of a frequency synthesizeraccording to an embodiment of the present disclosure;

FIG. 5 is a schematic architecture diagram of another frequencysynthesizer according to an embodiment of the present disclosure; and

FIG. 6 is a schematic diagram of a relationship between a frequency anda quantity of adjustment cells according to an embodiment of the presentdisclosure.

DESCRIPTION OF EMBODIMENTS

Embodiments of the present disclosure provide a coarse adjustment cellarray applied to a digitally controlled oscillator and a relatedapparatus, to avoid a mismatch problem as far as possible, so as toimprove related circuit performance.

To make persons skilled in the art understand the technical solutions inthe present disclosure better, the following clearly describes thetechnical solutions in the embodiments of the present disclosure withreference to the accompanying drawings in the embodiments of the presentdisclosure. Apparently, the described embodiments are merely a partrather than all of the embodiments of the present disclosure. All otherembodiments obtained by persons of ordinary skill in the art based onthe embodiments of the present disclosure without creative efforts shallfall within the protection scope of the present disclosure.

In the specification, claims, and accompanying drawings of the presentdisclosure, the terms “first”, “second”, “third”, and the like areintended to distinguish between different objects but do not indicate aparticular order. In addition, the terms “including”, “having”, or anyother variant thereof, are intended to cover a non-exclusive inclusion.For example, a process, a method, a system, a product, or a device thatincludes a series of steps or units is not limited to the listed stepsor units, but optionally further includes an unlisted step or unit, oroptionally further includes another inherent step or unit of theprocess, the method, the product, or the device.

A capacitor array of a conventional DCO includes a fine adjustment cellarray and a coarse adjustment cell array. The fine adjustment cell arrayis independent of the coarse adjustment cell array and there is nonested relationship between the two. The following describes ageneration mechanism of a mismatch problem in detail by using anexample.

For example, an ideal design is that a frequency step of a fineadjustment cell may be 10 ppm. If a fine adjustment cell array includesseven fine adjustment cells in total, a total frequency step is 70 ppm,and a frequency step of each coarse adjustment cell in a coarseadjustment cell array is 80 ppm, a frequency step of carry from a fineadjustment cell to a coarse adjustment cell is 10 ppm (80 ppm-7×10ppm=10 ppm). However, a mismatch problem usually occurs in an actualcircuit. If a test result of the frequency step of the fine adjustmentcell is 8 ppm, instead of 10 ppm in the ideal design, and the frequencystep of the coarse adjustment cell is still 80 ppm, a frequency step ofcarry from the fine adjustment cell array to the coarse adjustment cellis 24 ppm. Therefore, overall frequency steps of a capacitor array maybe . . . -8 ppm-8 ppm-8 ppm-8 ppm-8 ppm-8 ppm-8 ppm-24 ppm- . . . , thatis, after every seven times of 8 ppm, there is a larger frequency stepof 24 ppm. Occurrence of this larger frequency step may greatly affectcircuit performance.

The following describes solutions in the embodiments of the presentdisclosure in detail.

An embodiment of the present disclosure provides a digitally controlledoscillator, and the digitally controlled oscillator may include a coarseadjustment cell array, a coarse adjustment row-column decoder, and afine adjustment row-column decoder. The coarse adjustment cell array mayinclude X coarse adjustment cells, and each coarse adjustment cell inthe coarse adjustment cell array may include a logic cell and W fineadjustment cells.

Input to a logic cell of a coarse adjustment cell i in the coarseadjustment cell array includes Y coarse adjustment control bits and Wfine adjustment control bits, output from the logic cell of the coarseadjustment cell i is used to control whether W fine adjustment cells inthe coarse adjustment cell i work, and the coarse adjustment cell i isany coarse adjustment cell in the coarse adjustment cell array. Y is aninteger greater than 1, X is an integer greater than 1, and W is aninteger greater than 1.

For example, Y may be equal to 17, 2, 3, 4, 5, 6, 8, 10, 15, 19, 21, 30,50, or another value.

For example, X may be equal to 17, 2, 3, 4, 5, 6, 8, 12, 15, 19, 21, 30,51, or another value.

For example, W may be equal to 17, 2, 3, 4, 5, 6, 8, 12, 16, 19, 21, 32,50, or another value.

In some possible implementations of the present disclosure, W may beequal to 2^(n), and n may be a positive integer.

For example, n may be equal to 1, 2, 3, 4, 5, 6, 8, 12, 15, 19, 21, 30,50, or another value.

Referring to FIG. 1, FIG. 1 is a schematic diagram of a digitallycontrolled oscillator according to an embodiment of the presentdisclosure. A digitally controlled oscillator 100 whose architecture isshown in FIG. 1 may include a coarse adjustment cell array 130, a coarseadjustment row-column decoder 110, and a fine adjustment row-columndecoder 120.

Referring to FIG. 2, FIG. 2 is a schematic diagram of a possibleinternal architecture of the digitally controlled oscillator 100according to an embodiment of the present disclosure. In the digitallycontrolled oscillator 100 whose architecture is shown in FIG. 2, eachcoarse adjustment cell in the coarse adjustment cell array 130 mayinclude a logic cell and 2^(n) fine adjustment cells. That is, forexample, W is equal to 2^(n) in FIG. 2. For example, Y is equal to 2 inFIG. 2, and two coarse adjustment control bits may be represented asC<1:0>. If W is equal to 2^(n), 2^(n) fine adjustment control bits maybe represented as F<2^(n):1>.

Similarly, A coarse adjustment control bits may be represented asC<A−1:0>.

Similarly, B fine adjustment control bits may be represented asF<B−1:0>.

Similarly, W fine adjustment control bits may be represented asF<W−1:0>.

The coarse adjustment row-column decoder is configured to decode a firstcontrol signal input to the coarse adjustment row-column decoder, so asto output A coarse adjustment control bits.

For example, A may be equal to 17, 2, 3, 4, 5, 6, 8, 10, 15, 19, 21, 30,50, or another value.

A is greater than or equal to X.

In some possible implementations of the present disclosure, A may beequal to X+1.

The fine adjustment row-column decoder is configured to decode a secondcontrol signal input to the fine adjustment row-column decoder, so as tooutput B fine adjustment control bits.

For example, B may be equal to 16, 2, 3, 4, 5, 6, 8, 10, 15, 19, 21, 30,50, or another value.

A set formed by the Y coarse adjustment control bits is a subset of aset including the A coarse adjustment control bits. Specifically, forexample, the Y coarse adjustment control bits may be some or all coarseadjustment control bits in the A coarse adjustment control bits.

A set including the W fine adjustment control bits is a subset of a setincluding the B fine adjustment control bits. Specifically, for example,the W fine adjustment control bits may be some or all fine adjustmentcontrol bits in the B fine adjustment control bits.

A value of each coarse adjustment control bit may be “0” or “1”, and avalue of each fine adjustment control bit may be “0” or “1”.

Frequency steps of the W fine adjustment cells in the coarse adjustmentcell i may be all equal, or partially equal, or not equal to each other.

Frequency steps of the X coarse adjustment cells may be all equal, orpartially equal, or not equal to each other.

It can be learned that a coarse adjustment cell array of a digitallycontrolled oscillator in this embodiment includes X coarse adjustmentcells. Each coarse adjustment cell in the coarse adjustment cell arrayincludes a logic cell and W fine adjustment cells, that is, a fineadjustment cell is nested in a coarse adjustment cell, so that afrequency step of a coarse adjustment cell is directly determined byusing frequency steps of all fine adjustment cells in the coarseadjustment cell, and the frequency step of the coarse adjustment cellcan be better matched to the frequency steps of the fine adjustmentcells. This helps avoid a mismatch problem in the conventional art thatoccurs during carry from a fine adjustment cell to a coarse adjustmentcell. In addition, a logic cell is introduced to each coarse adjustmentcell, to control a working status (the working status may be working ornot working) of each fine adjustment cell in the coarse adjustment cell,so that each coarse adjustment cell can be flexibly and independentlycontrolled to work. This helps alleviate mismatch pressure in a circuitand layout design process. The introduction of the logic cell also helpsreduce a quantity of control cables, and helps reduce complexity of acabling layout of a related circuit, reduce complexity and an area ofthe circuit, and simplify a structure of the circuit.

Optionally, in some possible implementations of the present disclosure,if the Y coarse adjustment control bits are a first value, the outputfrom the logic cell of the coarse adjustment cell i is used to controlall the W fine adjustment cells in the coarse adjustment cell i to work;or if the Y coarse adjustment control bits are a second value, theoutput from the logic cell of the coarse adjustment cell i is used tocontrol all the W fine adjustment cells in the coarse adjustment cell inot to work; or if the Y coarse adjustment control bits are a thirdvalue, the logic cell of the coarse adjustment cell i controls, based ona value of the W fine adjustment control bits, some of the W fineadjustment cells in the coarse adjustment cell i to work. The firstvalue, the second value, and the third value are different from eachother.

It can be understood that, in the foregoing implementation example, ifthe Y coarse adjustment control bits input to the logic cell of thecoarse adjustment cell i are the first value, the logic cell of thecoarse adjustment cell i controls, regardless of the value of the W fineadjustment control bits input to the logic cell of the coarse adjustmentcell i, all the W fine adjustment cells in the coarse adjustment cell ito work, that is, the W fine adjustment control bits input to the logiccell of the coarse adjustment cell i are considered to be invalid inthis case.

It can be understood that, in the foregoing implementation example, ifthe Y coarse adjustment control bits input to the logic cell of thecoarse adjustment cell i are the second value, the logic cell of thecoarse adjustment cell i controls, regardless of the value of the W fineadjustment control bits input to the logic cell of the coarse adjustmentcell i, all the W fine adjustment cells in the coarse adjustment cell inot to work, that is, the W fine adjustment control bits input to thelogic cell of the coarse adjustment cell i are considered to be invalidin this case.

It can be understood that, in the foregoing implementation example, ifthe Y coarse adjustment control bits input to the logic cell of thecoarse adjustment cell i are the third value, the logic cell of thecoarse adjustment cell i controls, based on the value of the W fineadjustment control bits, some of the W fine adjustment cells in thecoarse adjustment cell i to work, that is, the W fine adjustment controlbits input to the logic cell of the coarse adjustment cell i areconsidered to be valid in this case.

For example, if Y is equal to 2, the first value may be “00”, “11”,“01”, or “10”. The second value may be any value that is in theforegoing four possible values and that is different from the firstvalue. The third value may be any value that is in the foregoing fourpossible values and that is different from the first value and thesecond value. Specifically, for example, the first value may be “11”,the second value may be “00”, and the third value may be “01” or “10”.The values may be analogized if Y is equal to another value.

Optionally, in some possible implementations of the present disclosure,there is a one-to-one correspondence between the W fine adjustment cellsin the coarse adjustment cell i and the W fine adjustment control bitsinput to the logic cell of the coarse adjustment cell i. If the Y coarseadjustment control bits are the third value, the output from the logiccell of the coarse adjustment cell i is used to control a fineadjustment cell that is in the W fine adjustment cells in the coarseadjustment cell i and that is corresponding to a fine adjustment controlbit whose value is 1 to work, and control a fine adjustment cell that isin the W fine adjustment cells in the coarse adjustment cell i and thatis corresponding to a fine adjustment control bit whose value is 0 notto work (that is, the fine adjustment cell is disabled); or if the Ycoarse adjustment control bits are the third value, the output from thelogic cell of the coarse adjustment cell i is used to control a fineadjustment cell that is in the W fine adjustment cells in the coarseadjustment cell i and that is corresponding to a fine adjustment controlbit whose value is 0 to work, and control a fine adjustment cell that isin the W fine adjustment cells in the coarse adjustment cell i and thatis corresponding to a fine adjustment control bit whose value is 1 notto work.

Optionally, in some possible implementations of the present disclosure,the set including the W fine adjustment control bits is equal to the setincluding the B fine adjustment control bits (that is, W is equal to B).Each coarse adjustment cell in the coarse adjustment cell array sharesthe W fine adjustment control bits.

Optionally, in some possible implementations of the present disclosure,two adjacent coarse adjustment cells in the coarse adjustment cell arrayshare one coarse adjustment control bit in the A coarse adjustmentcontrol bits, and any two adjacent coarse adjustment cells in the coarseadjustment cell array share different coarse adjustment control bits inthe A coarse adjustment control bits.

Referring to FIG. 3, FIG. 3 is a schematic diagram of a possibleinternal cabling manner of the coarse adjustment cell array 130according to an embodiment of the present disclosure. Each coarseadjustment cell may include 2^(n) fine adjustment cells. In an examplein FIG. 3, n=3, and each coarse adjustment cell includes one logic celland eight fine adjustment cells. Input to the logic cell includes twoadjacent coarse adjustment control bits and 2^(n) fine adjustmentcontrol bits. If n=3, the fine adjustment control bits are representedas F<7:0>. Output from the logic cell is used to control the 2^(n) fineadjustment cells to work. In an architecture illustrated in FIG. 3, eachcoarse adjustment cell in the coarse adjustment cell array shares the2^(n) fine adjustment control bits.

Optionally, in some possible implementations of the present disclosure,the coarse adjustment row-column decoder includes A coarse adjustmentcontrol bit output cables, and the A coarse adjustment control bits arein a one-to-one correspondence with the A coarse adjustment control bitoutput cables. That is, coarse adjustment control bits in the A coarseadjustment control bits are output by using different coarse adjustmentcontrol bit output cables in the A coarse adjustment control bit outputcables.

Optionally, in some possible implementations of the present disclosure,the fine adjustment row-column decoder includes B fine adjustmentcontrol bit output cables, and the B fine adjustment control bits are ina one-to-one correspondence with the B fine adjustment control bitoutput cables. That is, fine adjustment control bits in the B fineadjustment control bits are output by using different fine adjustmentcontrol bit output cables in the B fine adjustment control bit outputcables.

An embodiment of the present disclosure provides a coarse adjustmentcell array applied to a digitally controlled oscillator. The coarseadjustment cell array includes X coarse adjustment cells, and eachcoarse adjustment cell in the coarse adjustment cell array includes alogic cell and W fine adjustment cells. Input to a logic cell of acoarse adjustment cell i in the coarse adjustment cell array includes Ycoarse adjustment control bits and W fine adjustment control bits,output from the logic cell of the coarse adjustment cell i is used tocontrol whether W fine adjustment cells in the coarse adjustment cell iwork, and the coarse adjustment cell i is any coarse adjustment cell inthe coarse adjustment cell array. Y is an integer greater than 1, X isan integer greater than 1, and W is an integer greater than 1.

For example, Y may be equal to 17, 2, 3, 4, 5, 6, 8, 10, 15, 19, 21, 30,50, or another value.

For example, X may be equal to 17, 2, 3, 4, 5, 6, 8, 12, 15, 19, 21, 30,51, or another value.

For example, W may be equal to 17, 2, 3, 4, 5, 6, 8, 12, 16, 19, 21, 32,50, or another value.

In some possible implementations of the present disclosure, W may beequal to 2^(n), and n may be a positive integer.

For example, n may be equal to 1, 2, 3, 4, 5, 6, 8, 12, 15, 19, 21, 30,50, or another value.

A coarse adjustment row-column decoder is configured to decode a firstcontrol signal input to the coarse adjustment row-column decoder, so asto output A coarse adjustment control bits.

In some possible implementations of the present disclosure, A may beequal to X+1.

For example, A may be equal to 17, 2, 3, 4, 5, 6, 8, 10, 15, 19, 21, 30,50, or another value.

A fine adjustment row-column decoder is configured to decode a secondcontrol signal input to the fine adjustment row-column decoder, so as tooutput B fine adjustment control bits.

For example, B may be equal to 16, 2, 3, 4, 5, 6, 8, 10, 15, 19, 21, 30,50, or another value.

A set formed by the Y coarse adjustment control bits is a subset of aset including the A coarse adjustment control bits. Specifically, forexample, the Y coarse adjustment control bits may be some or all coarseadjustment control bits in the A coarse adjustment control bits.

A set including the W fine adjustment control bits is a subset of a setincluding the B fine adjustment control bits. Specifically, for example,the W fine adjustment control bits may be some or all fine adjustmentcontrol bits in the B fine adjustment control bits.

A value of each coarse adjustment control bit may be “0” or “1”, and avalue of each fine adjustment control bit may be “0” or “1”.

Frequency steps of the W fine adjustment cells in the coarse adjustmentcell i may be all equal, or partially equal, or not equal to each other.

Frequency steps of the X coarse adjustment cells may be all equal, orpartially equal, or not equal to each other.

It can be learned that a coarse adjustment cell array applied to adigitally controlled oscillator in this embodiment may include X coarseadjustment cells. Each coarse adjustment cell in the coarse adjustmentcell array includes a logic cell and W fine adjustment cells, that is, afine adjustment cell is nested in a coarse adjustment cell, so that afrequency step of a coarse adjustment cell is directly determined byusing frequency steps of all fine adjustment cells in the coarseadjustment cell, and the frequency step of the coarse adjustment cellcan be better matched to the frequency steps of the fine adjustmentcells. This helps avoid a mismatch problem in the conventional art thatoccurs during carry from a fine adjustment cell to a coarse adjustmentcell. In addition, a logic cell is introduced to each coarse adjustmentcell, to control a working status (the working status may be working ornot working) of each fine adjustment cell in the coarse adjustment cell,so that each coarse adjustment cell can be flexibly and independentlycontrolled to work. This helps alleviate mismatch pressure in a circuitand layout design process. The introduction of the logic cell also helpsreduce a quantity of control cables, and helps reduce complexity of acabling layout of a related circuit, reduce complexity and an area ofthe circuit, and simplify a structure of the circuit.

Optionally, in some possible implementations of the present disclosure,if the Y coarse adjustment control bits are a first value, the outputfrom the logic cell of the coarse adjustment cell i is used to controlall the W fine adjustment cells in the coarse adjustment cell i to work;or if the Y coarse adjustment control bits are a second value, theoutput from the logic cell of the coarse adjustment cell i is used tocontrol all the W fine adjustment cells in the coarse adjustment cell inot to work; or if the Y coarse adjustment control bits are a thirdvalue, the logic cell of the coarse adjustment cell i controls, based ona value of the W fine adjustment control bits, some of the W fineadjustment cells in the coarse adjustment cell i to work. The firstvalue, the second value, and the third value are different from eachother.

It can be understood that, in the foregoing implementation example, ifthe Y coarse adjustment control bits input to the logic cell of thecoarse adjustment cell i are the first value, the logic cell of thecoarse adjustment cell i controls, regardless of the value of the W fineadjustment control bits input to the logic cell of the coarse adjustmentcell i, all the W fine adjustment cells in the coarse adjustment cell ito work, that is, the W fine adjustment control bits input to the logiccell of the coarse adjustment cell i are considered to be invalid inthis case.

It can be understood that, in the foregoing implementation example, ifthe Y coarse adjustment control bits input to the logic cell of thecoarse adjustment cell i are the second value, the logic cell of thecoarse adjustment cell i controls, regardless of the value of the W fineadjustment control bits input to the logic cell of the coarse adjustmentcell i, all the W fine adjustment cells in the coarse adjustment cell inot to work, that is, the W fine adjustment control bits input to thelogic cell of the coarse adjustment cell i are considered to be invalidin this case.

It can be understood that, in the foregoing implementation example, ifthe Y coarse adjustment control bits input to the logic cell of thecoarse adjustment cell i are the third value, the logic cell of thecoarse adjustment cell i controls, based on the value of the W fineadjustment control bits, some of the W fine adjustment cells in thecoarse adjustment cell i to work, that is, the W fine adjustment controlbits input to the logic cell of the coarse adjustment cell i areconsidered to be valid in this case.

For example, if Y is equal to 2, the first value may be “00”, “11”,“01”, or “10”. The second value may be any value that is in theforegoing four possible values and that is different from the firstvalue. The third value may be any value that is in the foregoing fourpossible values and that is different from the first value and thesecond value. Specifically, for example, the first value may be “11”,the second value may be “00”, and the third value may be “01” or “10”.The values may be analogized if Y is equal to another value.

Optionally, in some possible implementations of the present disclosure,there is a one-to-one correspondence between the W fine adjustment cellsin the coarse adjustment cell i and the W fine adjustment control bitsinput to the logic cell of the coarse adjustment cell i. If the Y coarseadjustment control bits are the third value, the output from the logiccell of the coarse adjustment cell i is used to control a fineadjustment cell that is in the W fine adjustment cells in the coarseadjustment cell i and that is corresponding to a fine adjustment controlbit whose value is 1 to work, and control a fine adjustment cell that isin the W fine adjustment cells in the coarse adjustment cell i and thatis corresponding to a fine adjustment control bit whose value is 0 notto work; or if the Y coarse adjustment control bits are the third value,the output from the logic cell of the coarse adjustment cell i is usedto control a fine adjustment cell that is in the W fine adjustment cellsin the coarse adjustment cell i and that is corresponding to a fineadjustment control bit whose value is 0 to work, and control a fineadjustment cell that is in the W fine adjustment cells in the coarseadjustment cell i and that is corresponding to a fine adjustment controlbit whose value is 1 not to work.

Optionally, in some possible implementations of the present disclosure,the set including the W fine adjustment control bits is equal to the setincluding the B fine adjustment control bits, and each coarse adjustmentcell in the coarse adjustment cell array shares the W fine adjustmentcontrol bits.

Optionally, in some possible implementations of the present disclosure,two adjacent coarse adjustment cells in the coarse adjustment cell arrayshare one coarse adjustment control bit in the A coarse adjustmentcontrol bits, and any two adjacent coarse adjustment cells in the coarseadjustment cell array share different coarse adjustment control bits inthe A coarse adjustment control bits.

Referring to FIG. 4, an embodiment of the present disclosure provides afrequency synthesizer 400, including:

a digitally controlled oscillator 100 and a digital logic cell 200,where the digitally controlled oscillator 100 is any digitallycontrolled oscillator in the foregoing embodiments, the digital logiccell 200 is configured to output the first control signal to the coarseadjustment row-column decoder, and the digital logic cell 200 is furtherconfigured to output the second control signal to the fine adjustmentrow-column decoder.

Optionally, in some possible implementations of the present disclosure,the digital logic cell is configured to output the first control signalto the coarse adjustment row-column decoder according to a frequencydividing control word and a reference frequency that are input to thedigital logic cell, and the digital logic cell is further configured tooutput the second control signal to the fine adjustment row-columndecoder according to the frequency dividing control word and thereference frequency that are input to the digital logic cell.

Referring to FIG. 5, FIG. 5 is a schematic diagram of a possiblespecific structure of the frequency synthesizer 400 according to anembodiment of the present disclosure. The frequency synthesizer 400 mayfurther include a time-to-digital converter 300 (TDC), and thetime-to-digital converter 300 outputs a signal to the digital logic cell200.

When the frequency synthesizer (such as a phase-locked loop) is notlocked, there is a relatively large difference between a frequency ofthe digitally controlled oscillator and a target frequency. In thiscase, a coarse adjustment control bit is mainly depended on to make theoscillation frequency approximate to the target frequency. When thedifference between the oscillation frequency and the target frequency isless than a frequency step of a coarse adjustment cell, a fineadjustment cell is mainly depended on to dynamically correct thefrequency in a real-time manner. An example in FIG. 6 shows arelationship between a frequency and a quantity of working adjustmentcells (the adjustment cells include a coarse adjustment cell and a fineadjustment cell). F0 represents the target frequency.

A circuit provided in an embodiment of the present disclosure mayinclude any coarse adjustment cell array provided in the embodiments ofthe present disclosure.

For example, the coarse adjustment cell array includes X coarseadjustment cells, and each coarse adjustment cell in the coarseadjustment cell array includes a logic cell and W fine adjustment cells.Input to a logic cell of a coarse adjustment cell i in the coarseadjustment cell array includes Y coarse adjustment control bits and Wfine adjustment control bits, output from the logic cell of the coarseadjustment cell i is used to control whether W fine adjustment cells inthe coarse adjustment cell i work, and the coarse adjustment cell i isany coarse adjustment cell in the coarse adjustment cell array. Y is aninteger greater than 1, X is an integer greater than 1, and W is aninteger greater than 1.

For example, Y may be equal to 17, 2, 3, 4, 5, 6, 8, 10, 15, 19, 21, 30,50, or another value.

For example, X may be equal to 17, 2, 3, 4, 5, 6, 8, 12, 15, 19, 21, 30,51, or another value.

For example, W may be equal to 17, 2, 3, 4, 5, 6, 8, 12, 16, 19, 21, 32,50, or another value.

In some possible implementations of the present disclosure, W may beequal to 2^(n), and n may be a positive integer.

For example, n may be equal to 1, 2, 3, 4, 5, 6, 8, 12, 15, 19, 21, 30,50, or another value.

A coarse adjustment row-column decoder is configured to decode a firstcontrol signal input to the coarse adjustment row-column decoder, so asto output A coarse adjustment control bits.

In some possible implementations of the present disclosure, A may beequal to X+1.

For example, A may be equal to 17, 2, 3, 4, 5, 6, 8, 10, 15, 19, 21, 30,50, or another value.

A fine adjustment row-column decoder is configured to decode a secondcontrol signal input to the fine adjustment row-column decoder, so as tooutput B fine adjustment control bits.

For example, B may be equal to 16, 2, 3, 4, 5, 6, 8, 10, 15, 19, 21, 30,50, or another value.

A set including the Y coarse adjustment control bits is a subset of aset formed by the A coarse adjustment control bits. Specifically, forexample, the Y coarse adjustment control bits may be some or all coarseadjustment control bits in the A coarse adjustment control bits.

A set including the W fine adjustment control bits is a subset of a setincluding the B fine adjustment control bits. Specifically, for example,the W fine adjustment control bits may be some or all fine adjustmentcontrol bits in the B fine adjustment control bits.

A value of each coarse adjustment control bit may be “0” or “1”, and avalue of each fine adjustment control bit may be “0” or “1”.

Frequency steps of the W fine adjustment cells in the coarse adjustmentcell i may be all equal, or partially equal, or not equal to each other.

Frequency steps of the X coarse adjustment cells may be all equal, orpartially equal, or not equal to each other.

Optionally, in some possible implementations of the present disclosure,if the Y coarse adjustment control bits are a first value, the outputfrom the logic cell of the coarse adjustment cell i is used to controlall the W fine adjustment cells in the coarse adjustment cell i to work;or if the Y coarse adjustment control bits are a second value, theoutput from the logic cell of the coarse adjustment cell i is used tocontrol all the W fine adjustment cells in the coarse adjustment cell inot to work; or if the Y coarse adjustment control bits are a thirdvalue, the logic cell of the coarse adjustment cell i controls, based ona value of the W fine adjustment control bits, some of the W fineadjustment cells in the coarse adjustment cell i to work. The firstvalue, the second value, and the third value are different from eachother.

It can be understood that, in the foregoing implementation example, ifthe Y coarse adjustment control bits input to the logic cell of thecoarse adjustment cell i are the first value, the logic cell of thecoarse adjustment cell i controls, regardless of the value of the W fineadjustment control bits input to the logic cell of the coarse adjustmentcell i, all the W fine adjustment cells in the coarse adjustment cell ito work, that is, the W fine adjustment control bits input to the logiccell of the coarse adjustment cell i are considered to be invalid inthis case.

It can be understood that, in the foregoing implementation example, ifthe Y coarse adjustment control bits input to the logic cell of thecoarse adjustment cell i are the second value, the logic cell of thecoarse adjustment cell i controls, regardless of the value of the W fineadjustment control bits input to the logic cell of the coarse adjustmentcell i, all the W fine adjustment cells in the coarse adjustment cell inot to work, that is, the W fine adjustment control bits input to thelogic cell of the coarse adjustment cell i are considered to be invalidin this case.

It can be understood that, in the foregoing implementation example, ifthe Y coarse adjustment control bits input to the logic cell of thecoarse adjustment cell i are the third value, the logic cell of thecoarse adjustment cell i controls, based on the value of the W fineadjustment control bits, some of the W fine adjustment cells in thecoarse adjustment cell i to work, that is, the W fine adjustment controlbits input to the logic cell of the coarse adjustment cell i areconsidered to be valid in this case.

For example, if Y is equal to 2, the first value may be “00”, “11”,“01”, or “10”. The second value may be any value that is in theforegoing four possible values and that is different from the firstvalue. The third value may be any value that is in the foregoing fourpossible values and that is different from the first value and thesecond value. Specifically, for example, the first value may be “11”,the second value may be “00”, and the third value may be “01” or “10”.The values may be analogized if Y is equal to another value.

Optionally, in some possible implementations of the present disclosure,there is a one-to-one correspondence between the W fine adjustment cellsin the coarse adjustment cell i and the W fine adjustment control bitsinput to the logic cell of the coarse adjustment cell i. If the Y coarseadjustment control bits are the third value, the output from the logiccell of the coarse adjustment cell i is used to control a fineadjustment cell that is in the W fine adjustment cells in the coarseadjustment cell i and that is corresponding to a fine adjustment controlbit whose value is 1 to work, and control a fine adjustment cell that isin the W fine adjustment cells in the coarse adjustment cell i and thatis corresponding to a fine adjustment control bit whose value is 0 notto work; or if the Y coarse adjustment control bits are the third value,the output from the logic cell of the coarse adjustment cell i is usedto control a fine adjustment cell that is in the W fine adjustment cellsin the coarse adjustment cell i and that is corresponding to a fineadjustment control bit whose value is 0 to work, and control a fineadjustment cell that is in the W fine adjustment cells in the coarseadjustment cell i and that is corresponding to a fine adjustment controlbit whose value is 1 not to work.

Optionally, in some possible implementations of the present disclosure,the set including the W fine adjustment control bits is equal to the setincluding the B fine adjustment control bits, and each coarse adjustmentcell in the coarse adjustment cell array shares the W fine adjustmentcontrol bits.

Optionally, in some possible implementations of the present disclosure,two adjacent coarse adjustment cells in the coarse adjustment cell arrayshare one coarse adjustment control bit in the A coarse adjustmentcontrol bits, and any two adjacent coarse adjustment cells in the coarseadjustment cell array share different coarse adjustment control bits inthe A coarse adjustment control bits.

A circuit provided in an embodiment of the present disclosure mayinclude any digitally controlled oscillator provided in the embodimentsof the present disclosure. For example, the digitally controlledoscillator may include a coarse adjustment cell array, a coarseadjustment row-column decoder, and a fine adjustment row-column decoder.The coarse adjustment cell array may include X coarse adjustment cells,and each coarse adjustment cell in the coarse adjustment cell array mayinclude a logic cell (Logic Cell) and W fine adjustment cells.

Input to a logic cell of a coarse adjustment cell i in the coarseadjustment cell array includes Y coarse adjustment control bits and Wfine adjustment control bits, output from the logic cell of the coarseadjustment cell i is used to control whether W fine adjustment cells inthe coarse adjustment cell i work, and the coarse adjustment cell i isany coarse adjustment cell in the coarse adjustment cell array. Y is aninteger greater than 1, X is an integer greater than 1, and W is aninteger greater than 1.

For example, Y may be equal to 17, 2, 3, 4, 5, 6, 8, 10, 15, 19, 21, 30,50, or another value.

For example, X may be equal to 17, 2, 3, 4, 5, 6, 8, 12, 15, 19, 21, 30,51, or another value.

For example, W may be equal to 17, 2, 3, 4, 5, 6, 8, 12, 16, 19, 21, 32,50, or another value.

In some possible implementations of the present disclosure, W may beequal to 2^(n), and n may be a positive integer.

For example, n may be equal to 1, 2, 3, 4, 5, 6, 8, 12, 15, 19, 21, 30,50, or another value.

The coarse adjustment row-column decoder is configured to decode a firstcontrol signal input to the coarse adjustment row-column decoder, so asto output A coarse adjustment control bits.

For example, A may be equal to 17, 2, 3, 4, 5, 6, 8, 10, 15, 19, 21, 30,50, or another value.

A is greater than or equal to X.

In some possible implementations of the present disclosure, A may beequal to X+1.

The fine adjustment row-column decoder is configured to decode a secondcontrol signal input to the fine adjustment row-column decoder, so as tooutput B fine adjustment control bits.

For example, B may be equal to 16, 2, 3, 4, 5, 6, 8, 10, 15, 19, 21, 30,50, or another value.

A set including the Y coarse adjustment control bits is a subset of aset formed by the A coarse adjustment control bits. Specifically, forexample, the Y coarse adjustment control bits may be some or all coarseadjustment control bits in the A coarse adjustment control bits.

A set including the W fine adjustment control bits is a subset of a setincluding the B fine adjustment control bits. Specifically, for example,the W fine adjustment control bits may be some or all fine adjustmentcontrol bits in the B fine adjustment control bits.

A value of each coarse adjustment control bit may be “0” or “1”, and avalue of each fine adjustment control bit may be “0” or “1”.

Frequency steps of the W fine adjustment cells in the coarse adjustmentcell i may be all equal, or partially equal, or not equal to each other.

Frequency steps of the X coarse adjustment cells may be all equal, orpartially equal, or not equal to each other.

Optionally, in some possible implementations of the present disclosure,if the Y coarse adjustment control bits are a first value, the outputfrom the logic cell of the coarse adjustment cell i is used to controlall the W fine adjustment cells in the coarse adjustment cell i to work;or if the Y coarse adjustment control bits are a second value, theoutput from the logic cell of the coarse adjustment cell i is used tocontrol all the W fine adjustment cells in the coarse adjustment cell inot to work; or if the Y coarse adjustment control bits are a thirdvalue, the logic cell of the coarse adjustment cell i controls, based ona value of the W fine adjustment control bits, some of the W fineadjustment cells in the coarse adjustment cell i to work. The firstvalue, the second value, and the third value are different from eachother.

It can be understood that, in the foregoing implementation example, ifthe Y coarse adjustment control bits input to the logic cell of thecoarse adjustment cell i are the first value, the logic cell of thecoarse adjustment cell i controls, regardless of the value of the W fineadjustment control bits input to the logic cell of the coarse adjustmentcell i, all the W fine adjustment cells in the coarse adjustment cell ito work, that is, the W fine adjustment control bits input to the logiccell of the coarse adjustment cell i are considered to be invalid inthis case.

It can be understood that, in the foregoing implementation example, ifthe Y coarse adjustment control bits input to the logic cell of thecoarse adjustment cell i are the second value, the logic cell of thecoarse adjustment cell i controls, regardless of the value of the W fineadjustment control bits input to the logic cell of the coarse adjustmentcell i, all the W fine adjustment cells in the coarse adjustment cell inot to work, that is, the W fine adjustment control bits input to thelogic cell of the coarse adjustment cell i are considered to be invalidin this case.

It can be understood that, in the foregoing implementation example, ifthe Y coarse adjustment control bits input to the logic cell of thecoarse adjustment cell i are the third value, the logic cell of thecoarse adjustment cell i controls, based on the value of the W fineadjustment control bits, some of the W fine adjustment cells in thecoarse adjustment cell i to work, that is, the W fine adjustment controlbits input to the logic cell of the coarse adjustment cell i areconsidered to be valid in this case.

For example, if Y is equal to 2, the first value may be “00”, “11”,“01”, or “10”. The second value may be any value that is in theforegoing four possible values and that is different from the firstvalue. The third value may be any value that is in the foregoing fourpossible values and that is different from the first value and thesecond value. Specifically, for example, the first value may be “11”,the second value may be “00”, and the third value may be “01” or “10”.The values may be analogized if Y is equal to another value.

Optionally, in some possible implementations of the present disclosure,there is a one-to-one correspondence between the W fine adjustment cellsin the coarse adjustment cell i and the W fine adjustment control bitsinput to the logic cell of the coarse adjustment cell i. If the Y coarseadjustment control bits are the third value, the output from the logiccell of the coarse adjustment cell i is used to control a fineadjustment cell that is in the W fine adjustment cells in the coarseadjustment cell i and that is corresponding to a fine adjustment controlbit whose value is 1 to work, and control a fine adjustment cell that isin the W fine adjustment cells in the coarse adjustment cell i and thatis corresponding to a fine adjustment control bit whose value is 0 notto work (that is, the fine adjustment cell is disabled); or if the Ycoarse adjustment control bits are the third value, the output from thelogic cell of the coarse adjustment cell i is used to control a fineadjustment cell that is in the W fine adjustment cells in the coarseadjustment cell i and that is corresponding to a fine adjustment controlbit whose value is 0 to work, and control a fine adjustment cell that isin the W fine adjustment cells in the coarse adjustment cell i and thatis corresponding to a fine adjustment control bit whose value is 1 notto work.

Optionally, in some possible implementations of the present disclosure,the set including the W fine adjustment control bits is equal to the setincluding the B fine adjustment control bits (that is, W is equal to B).Each coarse adjustment cell in the coarse adjustment cell array sharesthe W fine adjustment control bits.

Optionally, in some possible implementations of the present disclosure,two adjacent coarse adjustment cells in the coarse adjustment cell arrayshare one coarse adjustment control bit in the A coarse adjustmentcontrol bits, and any two adjacent coarse adjustment cells in the coarseadjustment cell array share different coarse adjustment control bits inthe A coarse adjustment control bits.

Optionally, in some possible implementations of the present disclosure,the coarse adjustment row-column decoder includes A coarse adjustmentcontrol bit output cables, and the A coarse adjustment control bits arein a one-to-one correspondence with the A coarse adjustment control bitoutput cables. That is, coarse adjustment control bits in the A coarseadjustment control bits are output by using different coarse adjustmentcontrol bit output cables in the A coarse adjustment control bit outputcables.

Optionally, in some possible implementations of the present disclosure,the fine adjustment row-column decoder includes B fine adjustmentcontrol bit output cables, and the B fine adjustment control bits are ina one-to-one correspondence with the B fine adjustment control bitoutput cables. That is, fine adjustment control bits in the B fineadjustment control bits are output by using different fine adjustmentcontrol bit output cables in the B fine adjustment control bit outputcables.

Another circuit provided in an embodiment of the present disclosure mayinclude any frequency synthesizer provided in the embodiments of thepresent disclosure.

An electronic device provided in an embodiment of the present disclosuremay include any coarse adjustment cell array provided in the embodimentsof the present disclosure.

Another electronic device provided in an embodiment of the presentdisclosure may include any digitally controlled oscillator provided inthe embodiments of the present disclosure.

Another electronic device provided in an embodiment of the presentdisclosure may include any frequency synthesizer provided in theembodiments of the present disclosure.

The electronic device may be a mobile phone, a base station, a server, arouter, or the like.

In the foregoing embodiments, the description of each embodiment hasrespective focuses. For a part that is not described in detail in anembodiment, refer to related descriptions in other embodiments.

In the several embodiments provided in this application, it should beunderstood that the disclosed apparatus may be implemented in anothermanner. For example, the described apparatus embodiment is merely anexample. For example, the unit division is merely logical functiondivision and may be other division in actual implementation. Forexample, multiple units or components may be combined or integrated intoanother system, or some features may be ignored or not performed. Inaddition, the displayed or discussed mutual couplings or directcouplings or communication connections may be implemented through someinterfaces. The indirect couplings or communication connections betweenthe apparatuses or units may be implemented in electronic or otherforms.

The units described as separate parts may or may not be physicallyseparate, and parts displayed as units may or may not be physical units,may be located in one position, or may be distributed on multiplenetwork units. Some or all of the units may be selected according toactual requirements to achieve the objectives of the solutions of theembodiments.

In addition, functional units in the embodiments of the presentdisclosure may be integrated into one processing unit, or each of theunits may exist alone physically, or two or more units are integratedinto one unit. The integrated unit may be implemented in a form ofhardware, or may be implemented in a form of a software functional unit.

When the integrated unit is implemented in a form of a softwarefunctional unit and sold or used as an independent product, theintegrated unit may be stored in a computer-readable storage medium.Based on such an understanding, the technical solutions of the presentdisclosure essentially, or the part contributing to the prior art, orall or a part of the technical solutions may be implemented in a form ofa software product. The software product is stored in a storage mediumand includes several instructions for instructing a computer device(which may be a personal computer, a server, a network device, or thelike) to perform all or a part of the steps of the methods described inthe embodiments of the present disclosure. The foregoing storage mediumincludes any medium that can store program code, such as a USB flashdrive, a read-only memory (ROM), a random access memory (RAM), aremovable hard disk, a magnetic disk, or an optical disc.

The foregoing embodiments are merely intended for describing thetechnical solutions of the present disclosure, but not for limiting thepresent disclosure. Although the present disclosure is described indetail with reference to the foregoing embodiments, persons of ordinaryskill in the art should understand that they may still makemodifications to the technical solutions described in the foregoingembodiments or make equivalent replacements to some technical featuresthereof, without departing from the scope of the technical solutions ofthe embodiments of the present disclosure.

What is claimed is:
 1. A coarse adjustment cell array applied to adigitally controlled oscillator, the coarse adjustment cell arraycomprising: X coarse adjustment cells each comprising a logic cell and Wfine adjustment cells; and at least one logic cell of a coarseadjustment cell i configured to receive Y coarse adjustment control bitsand W fine adjustment control bits and control the W fine adjustmentcells, wherein Y is an integer greater than 1, X is an integer greaterthan 1, and W is an integer greater than
 1. 2. The coarse adjustmentcell array according to claim 1, wherein: when the Y coarse adjustmentcontrol bits are a first value, the logic cell of the coarse adjustmentcell i is configured to control all the W fine adjustment cells in thecoarse adjustment cell i to work; when the Y coarse adjustment controlbits are a second value, the logic cell of the coarse adjustment cell iis configured to control all the W fine adjustment cells in the coarseadjustment cell i not to work; and when the Y coarse adjustment controlbits are a third value, the logic cell of the coarse adjustment cell iis configured to control, based on a value of the W fine adjustmentcontrol bits, some of the W fine adjustment cells in the coarseadjustment cell i to work, wherein the first value, the second value,and the third value are different from each other.
 3. The coarseadjustment cell array according to claim 2, wherein: there is aone-to-one correspondence between the W fine adjustment cells in thecoarse adjustment cell i and the W fine adjustment control bits; andwhen the Y coarse adjustment control bits are the third value, theoutput from the logic cell of the coarse adjustment cell i is used tocontrol a fine adjustment cell that is in the W fine adjustment cells inthe coarse adjustment cell i and that is corresponding to a fineadjustment control bit whose value is 1 to work, and control a fineadjustment cell that is in the W fine adjustment cells in the coarseadjustment cell i and that is corresponding to a fine adjustment controlbit whose value is 0 not to work; or when the Y coarse adjustmentcontrol bits are the third value, the output from the logic cell of thecoarse adjustment cell i is used to control a fine adjustment cell thatis in the W fine adjustment cells in the coarse adjustment cell i andthat is corresponding to a fine adjustment control bit whose value is 0to work, and control a fine adjustment cell that is in the W fineadjustment cells in the coarse adjustment cell i and that iscorresponding to a fine adjustment control bit whose value is 1 not towork.
 4. The coarse adjustment cell array according to claim 1, whereinW is equal to 2^(n), and n is a positive integer.
 5. The coarseadjustment cell array according to claim 1, wherein Y is equal to
 2. 6.A digitally controlled oscillator, comprising: a coarse adjustment cellarray, comprising: X coarse adjustment cells each comprising a logiccell and W fine adjustment cells, and at least one logic cell of acoarse adjustment cell i configured to receive Y coarse adjustmentcontrol bits and W fine adjustment control bits and control the W fineadjustment cells, wherein Y is an integer greater than 1, X is aninteger greater than 1, and W is an integer greater than 1; a coarseadjustment row-column decoder configured to decode an input firstcontrol signal and output A coarse adjustment control bits; a fineadjustment row-column decoder configured to decode an input secondcontrol signal and output B fine adjustment control bits; and wherein aset formed by the Y coarse adjustment control bits is a subset of a setcomprising the A coarse adjustment control bits, and a set comprisingthe W fine adjustment control bits is a subset of a set comprising the Bfine adjustment control bits.
 7. The digitally controlled oscillatoraccording to claim 6, wherein the set comprising the W fine adjustmentcontrol bits is equal to the set comprising the B fine adjustmentcontrol bits, and each coarse adjustment cell in the coarse adjustmentcell array shares the W fine adjustment control bits.
 8. The digitallycontrolled oscillator according to claim 6, wherein two adjacent coarseadjustment cells in the coarse adjustment cell array share one coarseadjustment control bit in the A coarse adjustment control bits, and anytwo adjacent coarse adjustment cells in the coarse adjustment cell arrayshare different coarse adjustment control bits in the A coarseadjustment control bits.
 9. The digitally controlled oscillatoraccording to claim 6, wherein the coarse adjustment row-column decodercomprises: A coarse adjustment control bit output cables, and the Acoarse adjustment control bits are in a one-to-one correspondence withthe A coarse adjustment control bit output cables.
 10. The digitallycontrolled oscillator according to claim 6, wherein the fine adjustmentrow-column decoder comprises: B fine adjustment control bit outputcables, and the B fine adjustment control bits are in a one-to-onecorrespondence with the B fine adjustment control bit output cables. 11.A frequency synthesizer, comprising: a digitally controlled oscillator,comprising: a coarse adjustment cell array, comprising: X coarseadjustment cells each comprising a logic cell and W fine adjustmentcells; and at least one logic cell of a coarse adjustment cell iconfigured to receive Y coarse adjustment control bits and W fineadjustment control bits and control the W fine adjustment cells, whereinY is an integer greater than 1, X is an integer greater than 1, and W isan integer greater than 1, a coarse adjustment row-column decoderconfigured to decode a first control signal and output A coarseadjustment control bits, a fine adjustment row-column decoder configuredto decode a second control signal and output B fine adjustment controlbits, and wherein a set formed by the Y coarse adjustment control bitsis a subset of a set comprising the A coarse adjustment control bits,and a set comprising the W fine adjustment control bits is a subset of aset comprising the B fine adjustment control bits; and a digital logiccell configured to output the first control signal to the coarseadjustment row-column decoder and output the second control signal tothe fine adjustment row-column decoder.
 12. The frequency synthesizeraccording to claim 11, wherein the digital logic cell is configured to:output the first control signal to the coarse adjustment row-columndecoder according to a frequency dividing control word and a referencefrequency that are input to the digital logic cell; and output thesecond control signal to the fine adjustment row-column decoderaccording to the frequency dividing control word and the referencefrequency that are input to the digital logic cell.